User blog comment:PokeFreak117/How did this happen?/@comment-27248965-20171204165632/@comment-31267872-20171204232542

He's right. It can be VERY annoying sometimes, because you say, caught a Pokémon with a higher Poké Ball (any non-normal Poké Ball Poké Ball... lol) and you don't want the eggs the same Ball. If you ask me, I think you should get to choose the Ball, it makes more sense.

Say you caught a Pokémon with a Master Ball... now you want to breed it and you still have more Master Balls. However, if you don't have any more Balls of the same type... does it go in the next Ball in your bag, or just a normal Poké Ball / if there is only 1 Poké Ball variant left, then it uses that one.

But it makes me wonder, what if you have 0 Poké Balls of any kind?